[IPV6] IP6TUNNEL: Use update_pmtu() of dst on xmit.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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@ -727,11 +727,8 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
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}
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if (mtu < IPV6_MIN_MTU)
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mtu = IPV6_MIN_MTU;
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if (skb->dst && mtu < dst_mtu(skb->dst)) {
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struct rt6_info *rt = (struct rt6_info *) skb->dst;
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rt->rt6i_flags |= RTF_MODIFIED;
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rt->u.dst.metrics[RTAX_MTU-1] = mtu;
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}
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if (skb->dst)
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skb->dst->ops->update_pmtu(skb->dst, mtu);
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if (skb->len > mtu) {
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icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu, dev);
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goto tx_err_dst_release;
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